var isYaMarket = document.referrer.indexOf('//market.yandex.ru/')>-1;
function leaveYMStartPage() {
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};
if (isYaMarket) {
    carrotquest.identify([{op: 'update_or_create', key: 'yandexMarket', value: 1}]);
    window.addEventListener('beforeunload', leaveYMStartPage);
};